EUVD-2026-12443
GHSA-cwfj-642j-gfh4
4.3
CVSS 3.1
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CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Lifecycle Timeline
4
Patch Released
Mar 31, 2026 - 21:13 nvd
Patch available
EUVD ID Assigned
Mar 16, 2026 - 15:30 euvd
EUVD-2026-12443
Analysis Generated
Mar 16, 2026 - 15:30 vuln.today
CVE Published
Mar 16, 2026 - 15:16 nvd
MEDIUM 4.3
Description
Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to properly enforce read permissions in search API endpoints which allows guest users without read permissions to access posts and files in channels via search API requests. Mattermost Advisory ID: MMSA-2025-00554
Analysis
A remote code execution vulnerability (CVSS 4.3) that allows guest users without read permissions. Remediation should follow standard vulnerability management procedures.
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.
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Priority Score
22
Low
Medium
High
Critical
KEV: 0
EPSS: +0.0
CVSS: +22
POC: 0
Vendor Status
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External POC / Exploit Code
Leaving vuln.today
Destination URL
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